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65df098609
Summary: Keeping msan a function pass requires replacing the module level initialization: That means, don't define a ctor function which calls __msan_init, instead just declare the init function at the first access, and add that to the global ctors list. Changes: - Pull the actual sanitizer and the wrapper pass apart. - Add a newpm msan pass. The function pass inserts calls to runtime library functions, for which it inserts declarations as necessary. - Update tests. Caveats: - There is one test that I dropped, because it specifically tested the definition of the ctor. Reviewers: chandlerc, fedor.sergeev, leonardchan, vitalybuka Subscribers: sdardis, nemanjai, javed.absar, hiraditya, kbarton, bollu, atanasyan, jsji Differential Revision: https://reviews.llvm.org/D55647 llvm-svn: 350305
23 lines
820 B
LLVM
23 lines
820 B
LLVM
; Test that copy alignment for byval arguments is limited by param-tls slot alignment.
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; RUN: opt < %s -msan-check-access-address=0 -S -passes=msan 2>&1 | FileCheck \
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; RUN: %s
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; RUN: opt < %s -msan -msan-check-access-address=0 -S | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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%struct.S = type { i64, i64, i64, [8 x i8] }
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; CHECK: [[A:%.*]] = bitcast i64* {{.*}} add {{.*}} ptrtoint {{.*}} @__msan_param_tls {{.*}} i64 8)
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; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 [[A]], i8* align 8 {{.*}}, i64 32, i1 false)
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define void @Caller() sanitize_memory {
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entry:
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%agg.tmp = alloca %struct.S, align 16
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call void @Callee(i32 1, %struct.S* byval align 16 %agg.tmp)
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ret void
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}
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declare void @Callee(i32, %struct.S* byval align 16)
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